Abstract
The aim of this research was to determine the origins of the parietal and visceral branches of the internal iliac artery of the llama and to match those with the known types and classifications in the human being and domestic animals. The internal iliac artery divides at the level of the third sacral vertebra into the caudal gluteal and internal pudendal arteries corresponding to an intermediate long iliac type. It gives off the following collateral branches: umbilical, cranial gluteal, obturator and iliolumbar arteries. The intrapelvic visceral branches, vaginal or prostatic arteries, arise from the internal pudendal artery as occurs in carnivores. This is an important difference in relation to the distribution in characteristic long iliac and artiodactyla types. The origins of the parietal and visceral branches of internal iliac artery in the llama have characteristics in common with the domestic cat, which belongs to the carnivores. In relation to the Adachi classification, the internal iliac artery of the llama will be included in the IVa type. We believe that this study is a contribution of a new aspect in teaching and research in comparative anatomy.
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